linux-kernel - Re: [PATCH v12 0/5] Enable Linux guests on Hyper-V on ARM64

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Date:   Wed, 4 Aug 2021 16:37:09 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     Michael Kelley <mikelley@...rosoft.com>, will@...nel.org,
        mark.rutland@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-hyperv@...r.kernel.org,
        linux-efi@...r.kernel.org, wei.liu@...nel.org, kys@...rosoft.com,
        sthemmin@...rosoft.com, ardb@...nel.org
Subject: Re: [PATCH v12 0/5] Enable Linux guests on Hyper-V on ARM64

On Wed, Aug 04, 2021 at 05:25:57PM +0100, Catalin Marinas wrote:
> On Wed, Aug 04, 2021 at 08:52:34AM -0700, Michael Kelley wrote:
> > This series enables Linux guests running on Hyper-V on ARM64
> > hardware. New ARM64-specific code in arch/arm64/hyperv initializes
> > Hyper-V and its hypercall mechanism.  Existing architecture
> > independent drivers for Hyper-V's VMbus and synthetic devices just
> > work when built for ARM64. Hyper-V code is built and included in
> > the image and modules only if CONFIG_HYPERV is enabled.
> [...]
> > Hyper-V on ARM64 runs with a 4 Kbyte page size, but allows guests
> > with 4K/16K/64K page size. Linux guests with this patch series
> > work with all three supported ARM64 page sizes.
> > 
> > The Hyper-V vPCI driver at drivers/pci/host/pci-hyperv.c has
> > x86/x64-specific code and is not being built for ARM64. Enabling
> > Hyper-V vPCI devices on ARM64 is in progress via a separate set
> > of patches.
> > 
> > This patch set is based on the linux-next20210720 code tree.
> 
> Is it possible to rebase this on top of -rc3? Are there any
> dependencies or do you plan to upstream this via a different tree?

Some prerequisite patches are in hyperv-next.

https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/log/?h=hyperv-next

Wei.